Method for making amino functional polysiloxane emulsions
AssigneeDow Corning Corporation
InventorRonald Paul Gee
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Abstract
The instant invention pertains to a method for making amino-functional polysiloxane emulsions wherein said method comprises the emulsion polymerization of a mixture comprising cyclosiloxanes and an aminosilane having an amino-functional group solubility parameter equal to or less than 10.0. Said emulsion polymerization is carried out in the presence of water, at least one cationic surfactant and a basic polymerization catalyst. By using an aminosilane having an amino-functional group solubility parameter of equal to or less than 10.0 it is possible to produce emulsions with higher amine concentrations in the resulting polymer.
Claims26
A method for producing amino-functional polysiloxane emulsions comprising emulsion polymerization of a mixture comprising at least one cyclosiloxane and at least one aminosilane having an amino-functional group solubility parameter equal to or less than 10.0;
- wherein said emulsion polymerization is carried out in the presence of water, at least one cationic surfactant and a basic emulsion polymerization catalyst.
An emulsion composition comprising
- (A) 10 to 70 weight percent based on the total weight of the emulsion composition of an amino-functional polymer produced by polymerization of a cyclosiloxane and N-(cyclohexyl)aminopropyl methyldimethoxysilane;
- (B) 0.5 to 30 weight percent based on the total weight of the emulsion of a cationic surfactant;
- and
- (C) water.
An emulsion composition comprising
- (A) 10 to 70 weight percent based on the total weight of the emulsion composition of an amino-functional polymer produced by polymerization of a cyclosiloxane and 1,1,2,4-tetramethyl-1-sila-2-azacyclopentane;
- (B) 0.5 to 30 weight percent based on the total weight of the emulsion of a cationic surfactant;
- and
- (C) water.
An emulsion composition comprising
- (A) 10 to 70 weight percent based on the total weight of the emulsion composition of an amino-functional polymer produced by polymerization of a cyclosiloxane and aminohexylaminopropylmethyldimethoxysilane;
- (B) 0.5 to 30 weight percent based on the total weight of the emulsion of a cationic surfactant;
- and
- (C) water.
Dependencies are inferred from the claim text.